[tip: timers/core] clocksource/timer-riscv: ACPI: Add timer_cannot_wakeup_cpu

[tip-bot2 for Sunil V L]

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     d7f546c751e8c873302331af6a203ee61f894e9d
Gitweb:        https://git.kernel.org/tip/d7f546c751e8c873302331af6a203ee61f894e9d
Author:        Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
AuthorDate:    Wed, 27 Sep 2023 22:30:15 +05:30
Committer:     Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
CommitterDate: Wed, 11 Oct 2023 12:06:41 +02:00

clocksource/timer-riscv: ACPI: Add timer_cannot_wakeup_cpu

The timer capability to wakeup the cpu irrespective of its idle state is
provided by the flag in RHCT. Update the timer code to set this flag.

Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
Reviewed-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230927170015.295232-5-sunilvl@xxxxxxxxxxxxxxxx
---
 drivers/clocksource/timer-riscv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c
index da3071b..5019865 100644
--- a/drivers/clocksource/timer-riscv.c
+++ b/drivers/clocksource/timer-riscv.c
@@ -212,6 +212,10 @@ TIMER_OF_DECLARE(riscv_timer, "riscv", riscv_timer_init_dt);
 #ifdef CONFIG_ACPI
 static int __init riscv_timer_acpi_init(struct acpi_table_header *table)
 {
+	struct acpi_table_rhct *rhct = (struct acpi_table_rhct *)table;
+
+	riscv_timer_cannot_wake_cpu = rhct->flags & ACPI_RHCT_TIMER_CANNOT_WAKEUP_CPU;
+
 	return riscv_timer_init_common();
 }